Description
Tor before 0.2.3.24-rc allows remote attackers to cause a denial of service (assertion failure and daemon exit) by performing link protocol negotiation incorrectly.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | tor | 0.2.3.24-rc-1 | — |
| Debian 13 | tor | 0.2.3.24-rc-1 | — |
| Debian 12 | tor | 0.2.3.24-rc-1 | — |
| Debian 6.0 | tor | 0.2.4.23-1~deb6u1 | DLA-17-1 |
Advisories 1
- DLA-17-1 tor - new upstream version Debian Security (DSA / DLA) · Mar 9, 2026